Counterbalance mechanism for builder levers



J. JOLLY COUNTERBALANCE MECHANISM FOR BUILDER LEVERS Oct. 7, 1930.

Filed Jan. 16,

INVENTOR James 76/0 BY I ofif ifij jv ATTORNEYS Patented Oct. 7,1930 7 p JAMES JOL Y; or BoLTom mteLANn,AssiGNoR o: wnrtrrir mnomnn wonxs; or

WHITINSVILLE;MASSACHUSETTS,LA conrdnarionbr MAss'AeH sE'rrsm 7 7 connrrinnnnnnon meg mm r03 nuinniin E Levin s I 7 re eat r fiid re initis; 1929. Seria m. 352,545. 7

invention relates to the builder mech anism of a;spinning or twisting machine and particularly to a mechanism for counterbalancing the varying weight of yarn on the bobbins in amachine of the type .in' which the spindles and bobbins rather than; the rings, are reciprocated vertically.

It is the'objectofmy invention to provide 7 means for automatically increasing the in the drawings in which, 7 2o inents;

7 balance mechanlsm, taken 7 in Fig. 2. 7

counterweight as the mass .of yarn on the bobbins increases, togetli er7 with means for conveniently releasing and resetting the counterweight whenfthe bobbins are dofied.

My invention further relates. to arrangements and combinations of parts which will 7 be hereinafter described and more particularly pointed out in the appended claims. 7 v A preferred form of the invention is shown Fig. 1 is a front elevation of parts of a spinning frame embodying 7my improve- Fig. 2 is a front elevation, "partly in section, of the counterbalance mechanism, and

Fig. 3 is a sectional end view ofthe counteralong .the line Referrin to the drawings, I have shown portions 0 a spinning frame having a fixed ring rail 11 and a gritor'frame member 12extending lengthwise of the frame.

A spindle rail 13 is mounted on gulde rods 14 and isvertically reciprocated lifter rods 15 extending down through bearings in the grit and provided with feet lfiengaged by rolls 1'? on the ends of lifter levers 18. The levers 18 are mounted on cross shafts 19 having upwardly extending arms 20 connected by tie rods or bars 21.

is provided with a segment 22, to which is i attached a chain 23 passing over a guide and in itself forms no part of my present in- Vention, which relates to improved means for counterbalancing the increasing weight of yarn on the bobbinsas the bobbins are gratinally filled. 7 7

" For'this purpose, *I secure a counterbalance arm p11 one or more of the cro s s shafts 119 and I mount athreadedrod'3l' in bearings 32 and 33 at the oppositeends of the arm 30ll 7 d, "A" counterweight 35 is supported "by :the threaded rod 31 and is slidablethereonl The counterweight 35 is recessedin its middle p01 tlon to recelve amember36 having anfepening 37 therethrough, the upper portionl' of which is internally threaded to fit thelthreatled rod 31. The lower portion of tlieopen ing? 37 is cut awayfso that when the member '36 is raised, the internal threads clear'itlie rod 3l,land"-the"weight samay hemmed freely longitudinally thereof. 7 f The threaded member 36 has a depending studppo rtion 38 and isfprovidedwith a collar 39 spring40, both housed in a recess the weight 35; The spring acts against the collar "to draw thelmenib enifi yieldingly downward" into operative engagement with n the screw threads ofthe rod 31.

An arm 42 mountedon a cross7 rod43 pivoted in the wei'ght 35 and is providedwith 1 a handle 44 at its outer endh YThe a1=1n 42 engages the stud38and the member 36'i1iay be 7 thus raised by means of the handle 44, when-it 7 is desired to freethe weightfor longitudinal adjustmentthereof on the sl1aft31. I?

adjustably secured thereon. Thei'od 48 eattends throughaii opening in aibraeket 52 se curedtothering rail 13.' 7

7 As the spindle 7rail"movesf up Qand'down, The lever arm 20 on the end cross shaft 19 the collars 49 and 50 are alternately engaged by the bracket 52, and thepawl46 isoscillated tofeed; the ratchet 7 at, desired .rate of speed, thus gradually no ving the ig 7 t w the ou er end 7f7 t e ar ;30 and, increasing the counterbalancing elfect thereof. 7 757 q 7 A .7 When the bobbins. arefilled anddofied, the weight 7 35 .is readily 7 returned to its initial position by releasing the member 36 manually woo and sliding the weight freely along the rod 31.

Additional counterweights 60 may be placed on the cross shafts 19 to counterbal I have thus provided an extremely simple.

construction by which the spindle rails will be automatically counterweighted during the gradual filling of the bobbins and by which the increase in counterweight may be regulated in accordance with the size of yarn" being spun or twisted. 1

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is I 1. In a spinning or twisting frame, a counterbalance mechanism comprising a lever arm, a threaded rod rotatably mounted therein, means to intermittently rotate said rod, a counterweight slidable on said rod, a member movably mounted in said weight and threaded in one portion to engage said rod when in operative position and recessed to clear said rod when in inoperative position, and means to move said member to operative position. I p a p g b 2. In a spinning or twisting frame, a counterbalance mechanism comprising a lever arm, a threaded rod rotatably mounted therein, means to intermittently rotate said rod, a counterweight.slidable on said rod, a member movably mountedin said weight and threaded in one portion to engage said rod when in operative position and recessed to clear said rod when in inoperative position, and yielding means to move said -member to operative position.

3. In a spinning or twisting frame, a counterbalance mechanism comprising a lever arm, a threaded rod rotatably mounted therein, means to intermittently rotate said rod, a counterweight slidable on said rod, amember movably mounted in said weight and threaded in one portion to engage said rod when in operative position and recessed to clear said rod when in inoperativefposition, yielding means to move said member'to operative position, and manually operated means tomove said member to inoperative position. 7

4. In a spinning or twisting frame, a counterbalance mechanism comprising a lever arm, a threaded rod rotatably mounted therein, means to intermittently'rotate said rod, a counterweight slidable on said rod, and means on said weight effective to detachably engage the screw threads on said rod, where- "said weight yieldingly actuated to detachably engage the screw threads on said rod, whereby said weight may be moved by said rod axially thereof, and manual means for dis engaging said detachable means from said ro In testimony whereof I have hereunto' aifixed my signature.

JAMES JOLLY. 

